Color

#5b899a

#5b899a
hex#5b899a
rgbrgb(91, 137, 154)
hslhsl(196, 26%, 48%)
oklchoklch(0.603 0.056 223.2)
Closest name: Arctic (#648589)Relative luminance 0.2245

Colors that go with #5b899a

Charcoal, Copper and Cobalt Blue lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#9a6c5b

#5b9a8b · #5b699a

#9a5b89 · #899a5b

Split-complementary

Open in tool →

#9a5b69 · #9a8b5b

#8b5b9a · #9a6c5b · #699a5b

Contrast

#5b899a as textRatioAAAA largeAAAFix
Aaon white
3.83:1failpassfail
  • AA: use #517b8a as the text (4.62:1)
  • AAA: use #3c5c67 as the text (7.19:1)
  • AA: or shift the background to #1a1a1a (4.55:1)
Aaon black
5.49:1passpassfail
  • AAA: use #729cac as the text (7.07:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #5b899a as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

mcpConnect your agent — build around #5b899a
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #5b899a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5b899a-9cb5c4-df4e6e-1f232d-e9f1ef?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md